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Matthew K Wedemeyer, MD

Pain Management · Stanford

NPI 1699983577

Medicare standing
Clear
Enrolled, allowed to bill and order, not excluded
Plans that list them
10
2 carriers
Offices
4

Offices

4 locations · Stanford Health Care · 3,152 clinicians in this group

Looking this up.

Hospitals listed: Stanford Health Care. That is not proof they admit you there this week.

Plans that list them

10 plans · 2 carriers

A missing listing does not mean out of network. Directories change, and a listing does not cover every office. Call Dr. Wedemeyer’s office at (650) 723-4000 to confirm they take your plan. Ask about the office you use, its medical group, referrals and appointments.

10 of 10 plans

Plans whose provider directory lists this clinician
Alignment Health BreathEasy (HMO C-SNP)Alignment Health PlanListedOct 3, 2026
Alignment Health Clarity (HMO C-SNP)Alignment Health PlanListedOct 3, 2026
Alignment Health Harmony (HMO)Alignment Health PlanListedOct 3, 2026
Alignment Health Heart & Diabetes (HMO C-SNP)Alignment Health PlanListedOct 3, 2026
Alignment Health Heart & Diabetes CalPlus (HMO C-SNP)Alignment Health PlanListedOct 3, 2026
Alignment Health Heart & Diabetes Care (HMO C-SNP)Alignment Health PlanListedSep 28, 2026
Alignment Health Heart & Diabetes Choice (HMO C-SNP)Alignment Health PlanListedSep 28, 2026
Alignment Health Honor+ Plan (HMO)Alignment Health PlanListedOct 3, 2026
Alignment Health My Choice CalCare (HMO)Alignment Health PlanListedOct 3, 2026
DualConnect (HMO D-SNP)Santa Clara Family Health PlanListedSep 1, 2026

California Medical Board record

Licence A87925 · Current

Licensed to practise in California · since 2004 · expires 2027-07-31 · University of Southern California Keck School of Medicine.

No disciplinary actions, convictions, malpractice judgments or citations in this record.

Hospitals they work in

1 hospital

These rate the hospital, not this clinician. Most measures at most hospitals are no different from the national rate.

  • Stanford Health CareStanford, CAAcute Care Hospital · Voluntary non-profit - Private · Has an emergency departmentPart of Stanford Health Care, which runs 3 hospitalsHome of Stanford Cancer Institute, a National Cancer Institute designated comprehensive cancer centrePatients rate it 4 of 5 · 83% would definitely recommend it
    Overall rating: 5 of 5 starsWorse than the national rate — Perioperative pulmonary embolism or deep vein thrombosis rate: 5.31 (4.24 to 6.37) · 8,661 cases, Jul 2022 – Jun 2024Worse than the national rate — Rate of inpatient admissions for patients receiving outpatient chemotherapy: 14.1 (12.7 to 15.7) · 2,191 cases, Jan 2024 – Dec 2024Better than the national rate — Postoperative respiratory failure rate: 4.08 (1.95 to 6.21) · 5,296 cases, Jul 2022 – Jun 2024Better than the national rate — Catheter Associated Urinary Tract Infections (ICU + select Wards): 0.317, Oct 2024 – Sep 2025Better than the national rate — Clostridium Difficile (C.Diff): 0.446, Oct 2024 – Sep 2025Better than the national rate — SSI - Colon Surgery: 0.241, Oct 2024 – Sep 2025Better than the national rate — Ratio of unplanned hospital visits after hospital outpatient surgery: 0.7 (0.6 to 0.9) · 3,348 cases, Jan 2024 – Dec 2024
See every measure and the patient survey for Stanford Health Care

Behind the star rating — Deaths: 5 better, 3 the same, 0 worse of 8 measures. Safety: 3 better, 5 the same, 0 worse of 8 measures. Readmissions: 2 better, 5 the same, 4 worse of 11 measures. The star rating is worked out from an earlier period than the measures below, so the two can disagree.

Every scored measure at Stanford Health Care
Perioperative pulmonary embolism or deep vein thrombosis rateComplications and deaths5.31 (4.24 to 6.37) · 8,661 casesWorseJul 2022 – Jun 2024
Rate of inpatient admissions for patients receiving outpatient chemotherapyUnplanned return visits14.1 (12.7 to 15.7) · 2,191 casesWorseJan 2024 – Dec 2024
Postoperative respiratory failure rateComplications and deaths4.08 (1.95 to 6.21) · 5,296 casesBetterJul 2022 – Jun 2024
Catheter Associated Urinary Tract Infections (ICU + select Wards)Infections0.317BetterOct 2024 – Sep 2025
Clostridium Difficile (C.Diff)Infections0.446BetterOct 2024 – Sep 2025
SSI - Colon SurgeryInfections0.241BetterOct 2024 – Sep 2025
Ratio of unplanned hospital visits after hospital outpatient surgeryUnplanned return visits0.7 (0.6 to 0.9) · 3,348 casesBetterJan 2024 – Dec 2024
Abdominopelvic accidental puncture or laceration rateComplications and deaths1.06 (0.45 to 1.67) · 5,374 casesNo differentJul 2022 – Jun 2024
CMS Medicare PSI 90: Patient safety and adverse events compositeComplications and deaths0.86 (0.72 to 1)No differentJul 2022 – Jun 2024
Death rate among surgical inpatients with serious treatable complicationsComplications and deaths166.09 (137.88 to 194.3) · 470 casesNo differentJul 2022 – Jun 2024
Death rate for CABG surgery patientsComplications and deaths1.1 · 192 casesNoneJul 2022 – Jun 2025
Death rate for COPD patientsComplications and deaths6.4 · 146 casesNoneJul 2022 – Jun 2025
Death rate for heart attack patientsComplications and deaths9.7 · 253 casesNoneJul 2022 – Jun 2025
Death rate for heart failure patientsComplications and deaths6.3 · 880 casesNoneJul 2022 – Jun 2025
Death rate for pneumonia patientsComplications and deaths10.3 · 935 casesNoneJul 2022 – Jun 2025
Death rate for stroke patientsComplications and deaths8.7 · 501 casesNoneJul 2023 – Jun 2025
Hybrid Hospital-Wide All-Cause Risk Standardized Mortality RateComplications and deaths2.1 · 7,730 casesNoneJul 2024 – Jun 2025
Iatrogenic pneumothorax rateComplications and deaths0.13 (0 to 0.27) · 20,799 casesNo differentJul 2022 – Jun 2024
In-hospital fall-associated fracture rateComplications and deaths0.28 (0.14 to 0.43) · 23,182 casesNo differentJul 2022 – Jun 2024
Postoperative acute kidney injury requiring dialysis rateComplications and deaths0.94 (0.2 to 1.68) · 5,694 casesNo differentJul 2022 – Jun 2024
Postoperative hemorrhage or hematoma rateComplications and deaths2.36 (1.54 to 3.19) · 7,846 casesNo differentJul 2022 – Jun 2024
Postoperative sepsis rateComplications and deaths5.2 (3.76 to 6.64) · 5,603 casesNo differentJul 2022 – Jun 2024
Postoperative wound dehiscence rateComplications and deaths1.38 (0.23 to 2.53) · 2,211 casesNo differentJul 2022 – Jun 2024
Pressure ulcer rateComplications and deaths0.52 (0.21 to 0.83) · 19,915 casesNo differentJul 2022 – Jun 2024
Rate of complications for hip/knee replacement patientsComplications and deaths3.6 · 416 casesNoneApr 2023 – Mar 2025
Central Line Associated Bloodstream Infection (ICU + select Wards)Infections0.869No differentOct 2024 – Sep 2025
MRSA BacteremiaInfections0.857No differentOct 2024 – Sep 2025
SSI - Abdominal HysterectomyInfections0.368No differentOct 2024 – Sep 2025
Acute Myocardial Infarction (AMI) 30-Day Readmission RateUnplanned return visits16.2 · 247 casesNoneJul 2023 – Jun 2025
Heart failure (HF) 30-Day Readmission RateUnplanned return visits20.5 · 1,021 casesNoneJul 2023 – Jun 2025
Hospital return days for heart attack patientsUnplanned return visits47.8 · 258 casesNoneJul 2022 – Jun 2025
Hospital return days for heart failure patientsUnplanned return visits-1.6 · 990 casesNoneJul 2022 – Jun 2025
Hospital return days for pneumonia patientsUnplanned return visits20.8 · 976 casesNoneJul 2022 – Jun 2025
Pneumonia (PN) 30-Day Readmission RateUnplanned return visits16.5 · 959 casesNoneJul 2023 – Jun 2025
Rate of emergency department (ED) visits for patients receiving outpatient chemotherapyUnplanned return visits5.2 (4.4 to 6.2) · 2,191 casesNo differentJan 2024 – Dec 2024
Rate of readmission after hip/knee replacementUnplanned return visits5.1 · 425 casesNoneJul 2023 – Jun 2025
Rate of readmission for CABGUnplanned return visits9.6 · 158 casesNoneJul 2023 – Jun 2025
Rate of readmission for chronic obstructive pulmonary disease (COPD) patientsUnplanned return visits19.6 · 183 casesNoneJul 2023 – Jun 2025
Rate of unplanned hospital visits after colonoscopy (per 1,000 colonoscopies)Unplanned return visits12.7 (10.4 to 15.4) · 4,578 casesNo differentJan 2022 – Dec 2024

What patients said (6,810 patients answered, 25% of those asked)

Patient survey stars by topic at Stanford Health Care
Cleanliness4
Nurse communication4
Doctor communication4
Communication about medicines3
Discharge information4
Overall hospital rating4
Quietness2
Recommend hospital5
Share of patients giving the best answer at Stanford Health Care
Room was "always" clean75%
Nurses "always" communicated well82%
Doctors "always" communicated well81%
Staff "always" explained63%
Yes, staff "did" give patients this information89%
Yes, staff "did" give patients information about help after discharge89%
Doctors "always" explained things so they could understand76%
Doctors "always" listened carefully80%
Doctors "always" treated them with courtesy and respect87%
Patients who gave a rating of "9" or "10" (high)79%
Staff "always" explained new medications76%
Nurses "always" explained things so they could understand77%
Nurses "always" listened carefully79%
Nurses "always" treated them with courtesy and respect88%
"Always" quiet at night53%
"YES", patients would definitely recommend the hospital83%
Staff "always" explained possible side effects50%
Yes, staff "did" give patients information about possible symptoms90%

Original Medicare doctor bills

$11,069

Medicare paid this office $11,069 for 74 people.

This is what Medicare paid the clinician — not Medicare Advantage, and not the pharmacy.

Largest Original Medicare bills
Return visit (30+ min)38$4,449$95
New patient visit (60+ min)16$2,511$157

Who their Medicare patients are

74 Original Medicare patients in 2024. Average age 72 · Women 64% · Also on Medicaid 31% · Health risk score 1.58. Above the middle of the specialty; the typical pain management clinician is at 1.38.

Conditions among them: High blood pressure 72% · Diabetes 34% · Depression 32% · Coronary heart disease 28% · Cancer 24% · Chronic kidney disease 19% · Atrial fibrillation 15%.

The office billed $158,674, Medicare allowed $14,424 and paid $11,069; for 107 services of 20 kinds.

Original Medicare patients only. A risk score of 1.0 is the average Medicare patient; higher means sicker. Any count under 11 is hidden.

Year by year

Original Medicare by year
202474107721.58$158,674$11,069
202381143731.46$196,878$12,801
202290152711.47$187,636$14,099
2021108205701.45$301,325$18,487
2020102168691.48$197,499$13,139
2019109208681.35$228,034$14,968
201898192671.41$185,650$14,988
2017114197681.42$146,903$16,433
2016130241681.52$234,153$19,642
2015128244681.34$242,952$19,184
2014132255651.25$195,719$18,471
2013153216661.55$174,970$18,220

Original Medicare only. A service billed for fewer than 11 people in a year is hidden, so the lines can add up to less than the year's total.

See the services billed each year

2023: 3 services

Original Medicare services billed in 2023
Return visit (30+ min)40$4,207$82
New patient visit (60+ min)17$2,516$148
Moderate sedation services provided by the same physician or other qualified health care professional performing a gastrointestinal endoscopic service that sedation supports, requiring the presence of an independent trained observer to assist in the monito12$85$5

2022: 3 services

Original Medicare services billed in 2022
New patient visit (60+ min)28$4,280$153
Return visit (30+ min)36$4,255$82
Moderate sedation services provided by the same physician or other qualified health care professional performing a gastrointestinal endoscopic service that sedation supports, requiring the presence of an independent trained observer to assist in the monito11$67$5

2021: 7 services

Original Medicare services billed in 2021
New patient visit (60+ min)20$3,362$168
Destruction of lower or sacral spinal facet joint nerves using imaging guidance, single facet joint12$3,334$222
Return visit (30+ min)26$2,480$86
Long return visit (40+ min)13$1,710$132
Injection of substance into lower spine canal using imaging guidance13$1,122$86
Destruction of lower or sacral spinal facet joint nerves using imaging guidance, each additional facet joint11$943$59
Use of a drug to induce depression of consciousness by physician performing a procedure (5 years or older), initial 15 minutes25$325$11

2020: 4 services

Original Medicare services billed in 2020
New patient visit (60+ min)28$3,371$120
Return visit (30+ min)20$1,374$60
Long return visit (40+ min)15$1,335$89
Use of a drug to induce depression of consciousness by physician performing a procedure (5 years or older), initial 15 minutes16$167$9

2019: 7 services

Original Medicare services billed in 2019
New patient visit (60+ min)20$2,956$148
Injection of lower or sacral spine facet joint using imaging guidance, single level13$1,424$102
Injection of substance into lower spine canal using imaging guidance11$999$83
Long return visit (40+ min)12$999$83
Return visit (30+ min)14$994$52
Injection of lower or sacral spine facet joint using imaging guidance, second level12$730$56
Use of a drug to induce depression of consciousness by physician performing a procedure (5 years or older), initial 15 minutes33$374$10

2018: 6 services

Original Medicare services billed in 2018
New patient visit (60+ min)21$3,129$149
Return visit (30+ min)19$1,625$68
Injection of lower or sacral spine facet joint using imaging guidance, single level14$1,401$93
Long return visit (40+ min)11$1,086$99
Injection of lower or sacral spine facet joint using imaging guidance, second level11$650$54
Use of a drug to induce depression of consciousness by physician performing a procedure (5 years or older), initial 15 minutes22$274$11

2017: 5 services

Original Medicare services billed in 2017
New patient visit (60+ min)34$4,507$133
Long return visit (40+ min)26$2,478$95
Return visit (30+ min)27$2,316$66
Injection of substance into lower spine canal using imaging guidance11$907$82
Use of a drug to induce depression of consciousness by physician performing a procedure (5 years or older), initial 15 minutes18$217$11

2016: 5 services

Original Medicare services billed in 2016
New patient visit (60+ min)30$4,105$137
Return visit (30+ min)26$2,313$68
Long return visit (40+ min)20$1,983$99
Injection of anesthetic and/or steroid drug into sacral spine nerve root using imaging guidance, single level14$1,961$109
Moderate sedation services by physician also performing a procedure, patient 5 years of age or older, first 30 minutes31$1,434$38

2015: 4 services

Original Medicare services billed in 2015
New patient visit (60+ min)22$3,070$140
Return visit (30+ min)26$1,839$68
Moderate sedation services by physician also performing a procedure, patient 5 years of age or older, first 30 minutes29$1,307$38
Injections of substances into lower or sacral spine14$1,080$77

2014: 7 services

Original Medicare services billed in 2014
New patient visit (60+ min)22$3,099$141
Return visit (30+ min)32$2,676$59
Long return visit (40+ min)19$1,778$94
Moderate sedation services by physician also performing a procedure, patient 5 years of age or older, first 30 minutes37$1,525$38
Injection of anesthetic and/or steroid drug into sacral spine nerve root using imaging guidance, single level13$1,422$109
Injections of substances into lower or sacral spine14$924$66
Fluoroscopic guidance for spine or back muscle injection20$547$27

2013: 6 services

Original Medicare services billed in 2013
New patient visit (60+ min)32$4,538$142
Return visit (30+ min)32$2,689$64
Injection of anesthetic and/or steroid drug into sacral spine nerve root using imaging guidance, single level25$2,359$94
Injection of lower or sacral spine facet joint using imaging guidance, single level16$1,554$91
Long return visit (40+ min)14$1,423$95
Injection of lower or sacral spine facet joint using imaging guidance, second level13$746$53

Drugs they prescribed that Part D paid

$1,996

Pharmacies billed $1,996 in 2024.

This is pharmacy cost, not the office bill, and not what patients paid.

40 generic and fewer than 11 brand-name prescriptions · $1,996 in drug cost.

Part D prescriptions only. The opioid rate is opioid prescriptions as a share of all this clinician's Part D prescriptions; surgeons and pain specialists run higher than others, so it is shown against the same specialty.

Largest Part D drug costs
Gabapentin17$167$10

Year by year

Part D prescribing by year
20244321NoneNone$1,996
20236019None20%$6,095
2022652222% (14)None$1,944
20213119NoneNone$1,193
2020552322% (12)None$2,828
20195424NoneNone$7,347
20187132None31%$10,779
20171436326% (37)18%$18,793
2016993512% (12)13%$8,716
20151034335% (36)17%$6,833
20141295443% (56)24%$15,461
2013803520% (16)26%$7,657

Part D prescriptions only. A drug prescribed to fewer than 11 people in a year is hidden.

See the drugs prescribed each year

2023: 1 drug

Part D drugs prescribed in 2023
Gabapentin16$376$23

2022: 1 drug

Part D drugs prescribed in 2022
Gabapentin24$674$28

2020: 2 drugs

Part D drugs prescribed in 2020
Pregabalin14$599$43
Gabapentin11$457$42

2019: 2 drugs

Part D drugs prescribed in 2019
Diclofenac11$2,107$192
Gabapentin14$170$12

2018: 3 drugs

Part D drugs prescribed in 2018
Lyrica11$9,061$824
Gabapentin16$298$19
Diclofenac11$149$14

2017: 4 drugs

Part D drugs prescribed in 2017
Lyrica12$8,266$689
Duloxetine11$538$49
Hydrocodone-Acetaminophen11$465$42
Gabapentin28$432$15

2016: 2 drugs

Part D drugs prescribed in 2016
Gabapentin18$473$26
Duloxetine11$308$28

2015: 3 drugs

Part D drugs prescribed in 2015
Gabapentin19$526$28
Methadone11$295$27
Baclofen11$94$9

2014: 2 drugs

Part D drugs prescribed in 2014
Gabapentin28$695$25
Hydrocodone-Acetaminophen26$517$20

2013: 1 drug

Part D drugs prescribed in 2013
Gabapentin21$832$40

Money from drug and device companies

$21 in 2019

A payment is not proof that care is biased.

Payments by company
Scilex PharmaceuticalsZtlido 30 Pouch in 1 Carton 1 Patch in 1 Pouch$21
1 payment
  • Meals for Ztlido 30 Pouch in 1 Carton 1 Patch in 1 Pouch · 2019-01-30 · $21
See the published payment
Every published payment
Scilex PharmaceuticalsMeals · 2019-01-30Ztlido 30 Pouch in 1 Carton 1 Patch in 1 Pouch$21

Checkups this office reported

Medicare did not publish checkup rates for this clinician.

Medicare’s overall office score
76.5 / 100
Scores the office’s reporting and systems. It is not a grade for how the doctor treats you.

Professional record

NPI
1699983577
Licence
CA A87925California A87925: Current · expires 2027-07-31
Trained
University of Southern California Keck School of Medicine, 2002
Video visits
Lists video visits
Gender
Male
More record details
Sole proprietor
Yes
Taxonomy
Federal specialty code 2081P2900X (2081P2900X); Federal specialty code 207L00000X (207L00000X); Federal specialty code 207LP2900X (207LP2900X); Federal specialty code 208100000X (208100000X)
Mailing address
300 Pasteur Dr, Stanford, CA, 94305
NPI first listed
2007-05-21
NPI last updated
2024-04-11
NPI record certified
2024-04-11

This is when the NPI record was last certified, not a medical board exam.

Extra NPI addresses: 450 Broadway St, Redwood City, CA, 94063